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From Jean-Baptiste Onofré (JIRA) <j...@apache.org>
Subject [jira] [Updated] (KARAF-2453) Using features to extend existing configuration
Date Tue, 11 Feb 2014 19:16:25 GMT

     [ https://issues.apache.org/jira/browse/KARAF-2453?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Jean-Baptiste Onofré updated KARAF-2453:

    Fix Version/s:     (was: 2.3.4)

> Using features to extend existing configuration
> -----------------------------------------------
>                 Key: KARAF-2453
>                 URL: https://issues.apache.org/jira/browse/KARAF-2453
>             Project: Karaf
>          Issue Type: Improvement
>          Components: karaf-config, karaf-feature
>            Reporter: Jan Bernhardt
>            Assignee: Jean-Baptiste Onofré
>            Priority: Minor
>             Fix For: 2.4.0, 3.0.1, 2.3.5
> for me it looks like that there is currently no way to extend an existing configuration
file by installing a feature. But this is, what I would need for my use case and what would
be great IMHO for other users as well.
> Here is my idea.
> If a property already exists within a configuration file this property should not be
changed. But if a configuration file does not contain a certain key, this key=value should
be added at the end of the configuration file.
> Example:
> <config name="com.foo.bar">
>   myProperty = myValue
> </config>
> If com.foo.bar.cfg does not contain myProperty before the feature containing this example
was installed, then myProperty=myValue should be added to com.foo.bar.cfg file.
> This would make it possible to extend existing configuration files for custom needs.
A general use-case could be logging. My application would like to add a logger configuration
in case this logger is not configured already.
> 2. Example
> <config name="org.ops4j.pax.logging">
>   log4j.logger.org.apache.activemq.broker.util.LoggingBrokerPlugin=INFO, stdout, osgi:VmLogAppender
> </config>

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